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Finding the Fourth Proportional to 388,589.90, 582,963.42 and 163,950.89

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Solution

The fourth proportional to 388,589.90, 582,963.42 and 163,950.89 is: 245,959.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,589.90 : 582,963.42 = 163,950.89 : x
  2. Step 2: Convert to fraction form
    388,589.90/582,963.42 = 163,950.89/x
  3. Step 3: Cross multiply
    388,589.90x = 582,963.42 × 163,950.89
  4. Step 4: Simplify right side
    388,589.90x = 95,577,368,631.63
  5. Step 5: Solve for x
    x = 95,577,368,631.63/388,589.90
  6. Step 6: Final answer
    x = 245,959.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.